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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DateTime.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio settime", nullptr) < 0) {
perror("pledge");
return 1;
}
bool print_unix_date = false;
bool print_iso_8601 = false;
bool print_rfc_3339 = false;
bool print_rfc_5322 = false;
const char* set_date = nullptr;
Core::ArgsParser args_parser;
args_parser.add_option(set_date, "Set system date and time", "set", 's', "date");
args_parser.add_option(print_unix_date, "Print date as Unix timestamp", "unix", 'u');
args_parser.add_option(print_iso_8601, "Print date in ISO 8601 format", "iso-8601", 'i');
args_parser.add_option(print_rfc_3339, "Print date in RFC 3339 format", "rfc-3339", 'r');
args_parser.add_option(print_rfc_5322, "Print date in RFC 5322 format", "rfc-5322", 'R');
args_parser.parse(argc, argv);
if (set_date != nullptr) {
auto number = String(set_date).to_uint();
if (!number.has_value()) {
fprintf(stderr, "date: Invalid timestamp value");
return 1;
}
timespec ts = { number.value(), 0 };
if (clock_settime(CLOCK_REALTIME, &ts) < 0) {
perror("clock_settime");
return 1;
}
return 0;
}
// FIXME: this should be improved and will need to be cleaned up
// when additional output formats and formatting is supported
if (print_unix_date && print_iso_8601 && print_rfc_3339 && print_rfc_5322) {
fprintf(stderr, "date: multiple output formats specified\n");
return 1;
}
time_t now = time(nullptr);
auto date = Core::DateTime::from_timestamp(now);
if (print_unix_date) {
printf("%lld\n", (long long)now);
return 0;
} else if (print_iso_8601) {
printf("%s\n", date.to_string("%Y-%m-%dT%H:%M:%S-00:00").characters());
return 0;
} else if (print_rfc_5322) {
printf("%s\n", date.to_string("%a, %d %b %Y %H:%M:%S -0000").characters());
return 0;
} else if (print_rfc_3339) {
printf("%s\n", date.to_string("%Y-%m-%d %H:%M:%S-00:00").characters());
return 0;
} else {
printf("%s\n", date.to_string().characters());
return 0;
}
}
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